OFFSET
1,3
COMMENTS
Numbers k such that 6*k+1 is in A343302.
Note that no deficient number can be a multiple of 6.
LINKS
Jianing Song, Table of n, a(n) for n = 1..10000
EXAMPLE
8 is a term since every one of 49, 50, 51, 52 and 53 is deficient.
157 is not a term since 943, 944, 946 and 947 are all deficient while 945 is not.
MATHEMATICA
q[n_] := AllTrue[Range[5], DivisorSigma[-1, 6*n + #] < 2 &]; Select[Range[0, 120], q] (* Amiram Eldar, Mar 21 2024 *)
PROG
(PARI) isA343301(k) = for(i=1, 5, if( sigma(6*k+i) >= 2*(6*k+i), return(0) )); 1
CROSSREFS
KEYWORD
nonn
AUTHOR
Jianing Song, Apr 11 2021
STATUS
approved